SonTek Receives Patent for RiverSurveyor Technology

San Diego, CA — August 14th, 2012

SonTek is proud to announce the award patent number 8,125,849 for its exclusive 9-beam multi-frequency acoustic Doppler RiverSuveyor system.

The RiverSurveyor is a scientific device used to measure volumetric discharge (flow) through a channelized cross-section, such as river, stream or canal. This instrument and corresponding mathematical method improves flow data accuracy and permits sampling in dynamic depth condition with a single system – a feat that previously required numerous instruments.

"Since the RiverSurveyor's initial release in 2009, the technology has become the new standard in our industry" said Daryl Slocum, Director of R&D at SonTek, a brand of Xylem Inc. "Now users have an echosounder, a shallow-depth velocity profiler, and a deep-depth velocity profiler in a single package. And all of this is controlled by an advanced set of electronics and Doppler engine."

With this newly patented technology, scientists and researchers can collect high-definition data in shallow-to-deep water more efficiently, allowing for faster response times during instances of floods or other water related natural disasters. Data collected with the RiverSurveyor is also used by public agencies better to manage water resources and plan for the needs of growing communities.

For more information on this announcement or other SonTek news, visit www.sontek.com/news. Or contact Marketing Communications Manager, Christina Iarossi (ciarossi@sontek.com).

About SonTek

Founded in 1992 and advancing environmental science globally, SonTek manufactures acoustic Doppler instrumentation for water velocity measurement in oceans, rivers, lakes, harbors, canals, estuaries, industrial pipes and laboratories. SonTek's sophisticated and proprietary technology serves as the foundation for some of the industry's most trusted flow data collection systems such as the FlowTracker, the RiverSurveyor and more recently, the SonTek-IQ. SonTek is located in San Diego, California, and is a division of Xylem.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world's most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, New York, with 2014 revenues of $3.9 billion and approximately 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability Index for the last four years for advancing sustainable business practices and solutions worldwide and the Company has satisfied the requirements to be a constituent of the FTSE4Good Index Series each year since 2013.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all – that which occurs in nature. For more information please visit us at www.xyleminc.com.

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SonTek - A Xylem Brand

SonTek, advancing environmental science in over 100 countries, manufactures affordable, reliable acoustic Doppler instrumentation for water velocity measurement in oceans, rivers, lakes, canals, harbors, estuaries, and laboratories. Our instruments use sound waves to tell you how fast water is moving, where it is moving, and even if it is not moving at all. Our customers are scientists, engineers, hydrologists, research associates, water resource planners and anyone that needs to collect velocity (speed) data in every kind of body of water imaginable.

SonTek is a NOAA Weather-Ready Nation Ambassador! The Weather-Ready Nation Ambassador initiative is an effort to formally recognize NOAA partners who are improving the nation's readiness against extreme weather, water, and climate events. As a Weather-Ready Nation Ambassador, SonTek is committed to work with NOAA and other Ambassadors to strengthen national resilience against extreme weather.